Gage-cock.



' L. J. BORDO.

GAGE 000K.

APPLICATION IIL'ED JULY 6, 1907. 947, 172. Patented Jan. 18, 1910.

r 8 .27 2 L 1 2 J I A2 a; I A

LAMBERT 3'. 303130, or PHILAnELrHiA, PENNSYLVANIA.

GAGE-COCK.

Specification of Letters Patent. Patented J an. 18,1910.

Application filed July 6, 1907. Serial No. 382,472.

To all whom it may concern:

Be it known that I, LAMBERT J. Bonoo, a citizen of the United States ofAmerica, re-. siding in the city and county of Philadeh phia, in theState of Pennsylvania, have invented a certain new and usefulImprovement in Gage-Cocks, of which the following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof. 7

The present invention relates to I gage cocks used to determine theapproximate water level in steam-boilers.

The object of the inventionisto increase the life of the major portionor. the gage cock structure and improve the operation of the gage cockby the provision of a cons,

struction in which the valve proper and cooperating valve seat, the onlyparts sub ect to much wear and injury, may be easily and quicklyrepaired or renewed without neces sarily interfering with the use of theboiler to which the cock is applied.

Of the drawings, Figure 1 is a sectional elevation of the gage cock, andFig. 2 is a transverse section taken on the line 22 of Fig. 1. 1

In the drawings, A represents the valve casing provided. atits innerends witha threaded portion A to be screwed into a threaded openingformed in the boiler wall. The casing A has an inlet chamber A and anoutlet chamber A from which the discharge spout A extends. Between theinlet and outlet chambers are provided two ported valve seat members 13and D, which, in the form shown, are hollow plugs externa-lly threadedto engage the internal threads A and A respectively formed in thecasing. The valve seat member 13 is provided at its inner end with'aseat B against which the check valve C is adapted to seatitself undercertain conditions. The check valve C has a fluted stem C and ,isnormally urged toward its seat by the boiler pressure, which may besupplemented by the action of a spring C extending between the inner endof the stem C and an abutment in the form of a hollow plug C screwedinto the threaded portion A of the valve casing. The valve seat member Dis provided at its outer end with a seat D against which the main valveE may seat'itself. The valve E is provided with a fluted extension orstem E which passes through the valve seat members B and D. This stemserves asa strut-normally extending between the two valves andholdingthe valve G off its seat.

The valve E is also providedwith an outer stem portion E which extends'into the socl'get formed in the lower end of the valve spindle F, andis retained therein by a' threaded sleeve E which is screwed "into thesocket F and bears against the shoulderE carried by thestem portion EThe stem portion is also provided with a lug E which engages the endwall of the socket F The connection between the valve E and stem. ispreferably such that the valve has a limited freedom to adjust itselfproperly on the seat D 4 p The valve spindle F is provided with anenlarged threaded portion F which meshes with the threaded portion A? ofthe valvecasing and carries the usual operating wheel at'itsouter end.The outer end of the valve casing is closed by a gland G threaded" intothe threads A of the ,valve casing and is locked in place by a jam nut GThe gland holds packing in the form of rings G compressed between itsinner end and the shoulder A of the valve casing. The packing normallyacts as a stop against which the outer end of the threaded portion F ongages, thus in normal operation preventing any opening movement of themain valve E suflicientto permit the check valve 0 to close.

In normal operation the valve E is opened and closed by slight rotativemovements of the spindle F, the opening movement being insuiiicient toallow the valve C to seat itself. In this movement the valve C remainsin contact with the stem E hen it is desired to replace or repair thevalve seat member Dor valve E or both, the only parts'subject to rapidwear, the jamnut G2 is released and the gland F screwed out to about theposition indicated in dotted lines in Fig. 1. The valve spindle is thenrotated to carry the inner end of stem E out to the dotted line.position of Fig. 1. During this movement, the valve G seats itselfagainst the valve seat member B. The gland G and spindle Fare thenremoved from the valve and the valve E may be quickly and easilyrepaired-or replaced, as may be the valve seat member D which may beremoved by a suitable tool arranged torotate and retract it. For thispurpose the member D may be provided with spanner openings D v 1 preferto make the valve seat member B removlos able, though this is notentirely necessary as this member and the valve C, which is alsoremovable, are not subject to much wear.

The gage shown is particularly adapted for use with locomotive boilers,where, as is well known, the engineer is almost continuously testing hiswater supply. As the result of this constant usage, with the high steampressure employed, as well also as the bad water frequently used, thevalve seat member I) and valve E are subject to very rapid wear. Vith myinvention these parts may be repaired or replaced in a few minutes whilethe full head of steam is maintained in the boiler, and this without anydanger of scalding the hands of the engineer or other operator who makesthe repairs, especially as the packing rings, remain effective toprevent the passage of steam along the valve spindle until after thecheck valve C has seated itself. The valve seat members D and B, throughwhich the stem E passes, with the latter assist in properly guiding thevalve E toward and from its seat.

Having now described my invention,'what I claim as new and desire tosecure. by Letters Patent is:

1. In a gage cock, a hollowcasing, a ported valve seat member detachablysecured in and removable through the outer end of said casing, saidcasing being provided with a second valve seated port between the inletend of the casing and the valve seat member, a check valve adapted toclose said second port, a main valve for closing the port in said valveseat member, a strut normally extending between the two valves andserving to hold the check valve off its seat, an operating spindle towhich said main valve is detachably secured, said spindle having anenlarged threaded portion F which screws into a threaded casing portionA a packing surrounding the spindle at the outer end of the threadedportion F and normally serving as a stop to limit the opening movementof the main valve, and a retaining gland for the packing, in threadedengagement with the casing, the threaded engagement between the glandand easing being of sufficient length to allow an opening movement ofthe spindle sufficient to permit the check valve to seat itself withoutthe entire removal of the gland.

2. In a gage cock, a hollow casing, a ported valve seat memberdetachably secured in and removable through the outer end of saidcasing, said casing being provided with a second valve seated portbetween the inlet end of the casing and the valve seat member, a checkvalve adapted to close said second port, a main valve for closing theport in said valve seat member and provided with an extension passingthrough both of said ports and in normal operation engaging the checkvalve to hold the latter off its seat, an operating spindle to whichsaid main valve is detachably secured, said spindle having an enlargedthreaded portion F which screws into a threaded casing portion A apacking surrounding the spindle at the outer end of the threaded portionF and normally serving as a stop to limit the opening movement of themain valve, and a retaining gland for the packing, in threadedengagement with the casing, the threaded engagement between the glandand easing being of sufficient length to allow an opening movement ofthe spindle sufficient to permit the check valve to seat itself withoutthe entire removal of the gland.

LAMBERT J. BORDO. Witnesses:

ARNOLD KATZ, D. STEWART.

